<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>state</title>
  </head>
  <body>
    <!-- 准备好一个容器 -->
    <div id="test"></div>

    <!-- 引入react 核心库 -->
    <script
      type="text/javascript"
      src="../../react-js/react.development.js"
    ></script>
    <!-- 引入react-dom 用于支持react操作dom -->
    <script
      type="text/javascript"
      src="../../react-js/react-dom.development.js"
    ></script>
    <!-- 引入babel 用于jsx转为js -->
    <script type="text/javascript" src="../../react-js/babel.min.js"></script>

    <script type="text/babel">
      // 1.创建类组件
      class Weather extends React.Component {
        // 初始化状态
        state = { isHot: true, isWind: true };

        render() {
          const { isHot, isWind } = this.state;
          return (
            <h1 onClick={this.changeWeather}>
              今天天气是{isHot ? '炎热' : '凉爽'},{isWind ? '微风' : '大风'}
            </h1>
          );
        }

        // 自定义方法 ———— 要用赋值语句的形式 + 箭头函数
        changeWeather = () => {
          const isHot = this.state.isHot;
          const isWind = this.state.isWind;
          this.setState({ isHot: !isHot, isWind: !isWind });
        };
      }
      // 2.渲染组件到页面
      ReactDOM.render(<Weather />, document.getElementById('test'));
    </script>
  </body>
</html>
